node_modules

1 files changed, 75 insertions, 0 deletions

diff --git a/node_modules/react-dom/lib/flattenChildren.js b/node_modules/react-dom/lib/flattenChildren.js
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+++ b/node_modules/react-dom/lib/flattenChildren.js
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+/**
+ * Copyright 2013-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * 
+ */
+
+'use strict';
+
+var KeyEscapeUtils = require('./KeyEscapeUtils');
+var traverseAllChildren = require('./traverseAllChildren');
+var warning = require('fbjs/lib/warning');
+
+var ReactComponentTreeHook;
+
+if (typeof process !== 'undefined' && process.env && process.env.NODE_ENV === 'test') {
+  // Temporary hack.
+  // Inline requires don't work well with Jest:
+  // https://github.com/facebook/react/issues/7240
+  // Remove the inline requires when we don't need them anymore:
+  // https://github.com/facebook/react/pull/7178
+  ReactComponentTreeHook = require('react/lib/ReactComponentTreeHook');
+}
+
+/**
+ * @param {function} traverseContext Context passed through traversal.
+ * @param {?ReactComponent} child React child component.
+ * @param {!string} name String name of key path to child.
+ * @param {number=} selfDebugID Optional debugID of the current internal instance.
+ */
+function flattenSingleChildIntoContext(traverseContext, child, name, selfDebugID) {
+  // We found a component instance.
+  if (traverseContext && typeof traverseContext === 'object') {
+    var result = traverseContext;
+    var keyUnique = result[name] === undefined;
+    if (process.env.NODE_ENV !== 'production') {
+      if (!ReactComponentTreeHook) {
+        ReactComponentTreeHook = require('react/lib/ReactComponentTreeHook');
+      }
+      if (!keyUnique) {
+        process.env.NODE_ENV !== 'production' ? warning(false, 'flattenChildren(...): Encountered two children with the same key, ' + '`%s`. Child keys must be unique; when two children share a key, only ' + 'the first child will be used.%s', KeyEscapeUtils.unescape(name), ReactComponentTreeHook.getStackAddendumByID(selfDebugID)) : void 0;
+      }
+    }
+    if (keyUnique && child != null) {
+      result[name] = child;
+    }
+  }
+}
+
+/**
+ * Flattens children that are typically specified as `props.children`. Any null
+ * children will not be included in the resulting object.
+ * @return {!object} flattened children keyed by name.
+ */
+function flattenChildren(children, selfDebugID) {
+  if (children == null) {
+    return children;
+  }
+  var result = {};
+
+  if (process.env.NODE_ENV !== 'production') {
+    traverseAllChildren(children, function (traverseContext, child, name) {
+      return flattenSingleChildIntoContext(traverseContext, child, name, selfDebugID);
+    }, result);
+  } else {
+    traverseAllChildren(children, flattenSingleChildIntoContext, result);
+  }
+  return result;
+}
+
+module.exports = flattenChildren;
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